.da {
    background-color: rgb(255, 255, 255);
    width: 1200px;
    height: 600px;
    position: relative;
    top: 100px;
    left: 20px;
    bottom: 100px;
    z-index: 1;
    margin: auto;
}

a:hover {
    color: rgb(228, 250, 101);
}

.yuan {
    background-color: rgb(199, 139, 139);
    width: 120px;
    height: 100px;
    border-radius: 50px;
    position: relative;
    left: 150px;
    bottom: 40px;
}

.h1 {
    text-align: center;
    position: relative;
    bottom: 20px;
    top: 50px;
}

.zhong {
    background-color: rgb(255, 245, 151);
    width: 430px;
    height: 590px;
    position: absolute;
    bottom: 100px;
    left: 500px;
    text-align: center;
    box-shadow: 10px 10px 5px rgb(192, 150, 86);
}

.c {
    position: absolute;
    width: 80px;
    height: 30px;
    background-color: rgb(224, 177, 105);
    bottom: 260px;
    left: 170px;
    display: block;
}

a:hover {
    color: rgb(228, 250, 101);
}

.a {
    position: absolute;
    right: 320px;
    left: 220px;
    top: 170px;
    box-shadow: rgb(236, 197, 68);
}

.xiao {
    background-color: rgb(106, 175, 255);
    width: 350px;
    height: 250px;
    position: absolute;
    left: 60px;
    top: 300px;
    text-align: center;
    box-shadow: 10px 10px 5px rgb(201, 173, 52);
}

.d {
    position: absolute;
    width: 80px;
    height: 30px;
    background: lightblue;
    bottom: 50px;
    left: 130px;
    border: .50px dotted rgb(218, 199, 32);
}